Across the world, O'Shaughnessey (O'Shaughnessey 
) is an extremely rare unknown gender first name. Much more prevalently, O'Shaughnessey is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| O'Shaughnessey | Canada, United States, Australia |
| roebuck o'shaughnessey Irish Chief of the Name |
|
|
| becker o'shaughnessey American tennis player, US (b. 1994) |
|
Dan, Nancy, Elyse, Helen, Morgan, Connor, Becker, Kaylin, Daniel, Joseph, Taylor, Thomas, Matthew, Michael, Colleen, Patrick, Patrice, Joëlle, Vincent, Michaela, Courtney, Kristine, James, Janet, Laura, David, Tom, Mary, Mike, Sean, Skya, Alex, Rita, Ryan, Jami, John, Danielle, Erin, Steve, Celia, Betty, Kathy, Katie, Kelly, Kevin, Kyren, Roger, Riley, Molly, and Jennifer